Generate gimple-match.c and generic-match.c earlier
I was wondering, why gimple-match.c and generic-match.c
are not built early but always last, which slows down parallel
makes significantly.
The reason seems to be that generated_files does not
mention gimple-match.c and generic-match.c.
This comment in Makefile.in says it all:
"In order for parallel make to really start compiling the expensive
objects from $(OBJS) as early as possible, build all their
prerequisites strictly before all objects."
So this patch adds gimple-match.c and generic-match.c to generated_files.